# git rev-parse -q --verify 522f155b1e573236a92cea2f173046ca43070a73^{commit} 522f155b1e573236a92cea2f173046ca43070a73 already have revision, skipping fetch # git checkout -q -f -B kisskb 522f155b1e573236a92cea2f173046ca43070a73 # git clean -qxdf # < git log -1 # commit 522f155b1e573236a92cea2f173046ca43070a73 # Author: Aneesh Kumar K.V # Date: Mon Apr 16 16:57:24 2018 +0530 # # powerpc/book3s64: Enable split pmd ptlock. # # Testing with a threaded version of mmap_bench which allocate 1G chunks and # with large number of threads we find: # # without patch # # 32.72% mmap_bench [kernel.vmlinux] [k] do_raw_spin_lock # | # ---do_raw_spin_lock # | # --32.68%--0 # | # |--15.82%--pte_fragment_alloc # | | # | --15.79%--do_huge_pmd_anonymous_page # | __handle_mm_fault # | handle_mm_fault # | __do_page_fault # | handle_page_fault # | test_mmap # | test_mmap # | start_thread # | __clone # | # |--14.95%--do_huge_pmd_anonymous_page # | __handle_mm_fault # | handle_mm_fault # | __do_page_fault # | handle_page_fault # | test_mmap # | test_mmap # | start_thread # | __clone # | # # with patch # # 12.89% mmap_bench [kernel.vmlinux] [k] do_raw_spin_lock # | # ---do_raw_spin_lock # | # --12.83%--0 # | # |--3.21%--pagevec_lru_move_fn # | __lru_cache_add # | | # | --2.74%--do_huge_pmd_anonymous_page # | __handle_mm_fault # | handle_mm_fault # | __do_page_fault # | handle_page_fault # | test_mmap # | test_mmap # | start_thread # | __clone # | # |--3.11%--do_huge_pmd_anonymous_page # | __handle_mm_fault # | handle_mm_fault # | __do_page_fault # | handle_page_fault # | test_mmap # | test_mmap # | start_thread # | __clone # # ..... # | # --0.55%--pte_fragment_alloc # | # --0.55%--do_huge_pmd_anonymous_page # __handle_mm_fault # handle_mm_fault # __do_page_fault # handle_page_fault # test_mmap # test_mmap # start_thread # __clone # # Signed-off-by: Aneesh Kumar K.V # Signed-off-by: Michael Ellerman # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < git log --format=%s --max-count=1 522f155b1e573236a92cea2f173046ca43070a73 # < make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-next_44x_ebony_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- 44x/ebony_defconfig # make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-next_44x_ebony_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c: In function 'proc_reg_open': /kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c:340:21: note: 'pdeo' was declared here /kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq': /kisskb/src/drivers/tty/serial/8250/8250_core.c:251:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c:231:19: note: 'i' was declared here arch/powerpc/boot/ebony.dtb: Warning (pci_bridge): /plb/pci@20ec00000: missing bus-range for PCI bridge arch/powerpc/boot/ebony.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' INFO: Uncompressed kernel (size 0x4aa02c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x500000) INFO: Uncompressed kernel (size 0x4aa02c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x500000) Image Name: Linux-4.17.0-rc3-g522f155 Created: Tue May 15 11:28:39 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 2361087 Bytes = 2305.75 kB = 2.25 MB Load Address: 00500000 Entry Point: 005000a4 Completed OK # rm -rf /kisskb/build/powerpc-next_44x_ebony_defconfig_powerpc # Build took: 0:01:02.882949